Link G4X WRXLink (V3–V4) WRX4X ECUThe Link G4X WRXLink (V3V4) WRX4X ECU is a direct fit engine management system designed for early Subaru Impreza WRX platforms using the EJ20 engine. It installs into the factory ECU enclosure and connects directly to the OEM wiring loom with no modification required. This ECU is intended for manual transmission vehicles only and provides full G4X tuning capability while retaining core factory functionality. Important: Please confirm your ECU

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1 x DTM4 CAN Gauge connection cable

Front mounted buttons for page navigation

Supports knock control

It is designed for demanding road car and motorsport applications requiring high accuracy fuel control and advanced engine strategies

3 port solenoids typically allow boost levels around 2 to 3 times wastegate spring pressure

5 mm² wire used for all other circuits

T-Series engine control units are powered by an all-new

fully configurable I/O and up to

Extending CAN and power wiring between ECU and CAN devices

USB connection for configuration and tuning

Professional installation and calibration recommended